--TEST--
GC 007: Unreferensed array cycle
--FILE--
<?php
$a = array(array());
$a[0][0] =& $a[0];
var_dump($a[0]);
var_dump(gc_collect_cycles());
unset($a);
var_dump(gc_collect_cycles());
echo "ok\n"
?>
--EXPECT--
array(1) {
  [0]=>
  &array(1) {
    [0]=>
    &array(1) {
      [0]=>
      *RECURSION*
    }
  }
}
int(0)
int(1)
ok
